直(zhi)接測數法是(shi)憑借照布(bu)鏡(jing)(jing)(jing)或織(zhi)物密度(du)(du)分析鏡(jing)(jing)(jing)來完(wan)成。織(zhi)物密度(du)(du)分析鏡(jing)(jing)(jing)的(de)刻度(du)(du)尺長度(du)(du)為5cm,在分析鏡(jing)(jing)(jing)頭下面,一(yi)(yi)塊(kuai)長條(tiao)形玻璃片(pian)上刻有(you)(you)一(yi)(yi)條(tiao)紅線, 棉(mian)帆(fan)布(bu) 就是(shi)棉(mian)線布(bu) 俗稱CC56,還有(you)(you)聚酯輸(shu)送(song)帶(dai)(dai)、尼龍輸(shu)送(song)帶(dai)(dai)、相(xiang)比棉(mian)帆(fan)布(bu)輸(shu)送(song)帶(dai)(dai)拉(la)力大。棉(mian)帆(fan)布(bu)輸(shu)送(song)帶(dai)(dai),適用于短距離、載量中(zhong)等條(tiao)件下輸(shu)送(song)物料(liao),拉(la)力比較低,承(cheng)重有(you)(you)一(yi)(yi)定的(de)...